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Asking for simple LED driver circuit diagram

B

bassbindevil

Joined Jan 23, 2014
828
Just use resistors, and consider the fact that it gets dimmer as the battery draws down as a feature that extends runtime and won't plunge you into darkness with no warning.
 
planetElectron

Thread Starter

planetElectron

Joined May 5, 2022
17
eetech00 said:
The circuit in blue is not a constant current driver, it is a current limiter circuit.
Click to expand...
Thanks for your info.

Audioguru again said:
Your Lithium battery should be 4.2V when fully charged. Yours is near half-discharged (the selling and storage voltage).
Click to expand...
Yes, it is 4.2V when fully charged.

bassbindevil said:
Just use resistors, and consider the fact that it gets dimmer as the battery draws down as a feature that extends runtime and won't plunge you into darkness with no warning.
Click to expand...
an advantage of resistor driver,
thanks for the replies.
 
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